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olchik [2.2K]
3 years ago
6

Which natural resource is nonrenewable?

Chemistry
2 answers:
algol [13]3 years ago
5 0

Answer:

I think the best answer would be coal

Alex17521 [72]3 years ago
4 0

Answer:

coal

Explanation:

because corn is not on the test

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How do i calculate the mass of CO2 emitted per Kj of heat produced in a combustion reaction?
Alexxandr [17]
 methanol:

1 mole CH3 OH --> produces --> 1 mole CO2 

1 mole CO2 has a molar mass of 44.01 gh/mole
 
your set up is:
(44.01 g CO2) / -726.5kJ = 0.06058g

your answer 0.06058 grams of CO2 produced per kJ released.
6 0
4 years ago
A student carries out the same titration but uses an indicator instead of a pH meter. If the indicator changes color slightly pa
creativ13 [48]

Answer:

Too high a value

Explanation:

HA + NaOH ⟶ NaA +H₂O

If the student has gone slightly past the equivalence point, they have added too much base.

The moles of HA are directly proportional to the moles of NaOH, so the moles of acid that the student calculates will be too high.

The calculated concentration of acid will also be too high.

4 0
4 years ago
1.Which of the following is NOT true about the nucleus?A.It directs all the cell’s activities.B.It is separated from the rest of
Inessa05 [86]

Answer:

C.

Explanation:

Doesn't provide energy.

5 0
3 years ago
Scientific knowledge can withstand the test of time because A. exceptions can be made regarding scientific laws. B. it is open t
Iteru [2.4K]

B. It is open to change as new evidence or data is discovered. If scientists discover new evidence, they must modify their theories to conform with the new data.

A. is <em>incorrect</em>. Scientific laws are so well established that there can be no exceptions.

C. is <em>incorrect</em>. A scientific theory is the collective judgement of scientists as to the best explanation for a phenomenon. A new observation may require modification of the theory.

D. is <em>incorrect</em>. Advancements in technology can provide new evidence that requires new explanations.

5 0
3 years ago
Read 2 more answers
Backpackers often use canisters of white gas to fuel a cooking stove’s burner. If one canister contains 1.45 L of white gas, and
rusak2 [61]
1 L ------- 1000 cm³
1.45 L ----- ???

1.45 * 1000 = 1450 cm³  ( volume ) 

Density = 0.710 g/cm³

mass =  in Kg 

m = D * V

m = 0.710  * 1450

m = 1029.5 g

1 Kg ------- 1000 g
   kg -------- 1029.5 g

mass = 1029.5 / 1000

mass = 1.0295 Kg

hope this helps!

7 0
3 years ago
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